Symfony 4 Limenius workshop - php

Question

I'm pretty new to coding with php and a friend of mine recommended the Limenius sf4 workshop. However, I'm stuck at the very beginning just to set the database up.
When typing php bin/console doctrine:schema:update --dump-sql into my shell (working on Windows) I get this error messages:
Error thrown while running command "doctrine:schema:update --dump-sql". Message: "An exception occurred in driver: SQLSTATE[HY000] [1045] Access denied for user 'db_user'#'localhost' (using password: YES)"
In AbstractMySQLDriver.php line 113:
An exception occurred in driver: SQLSTATE[HY000] [1045] Access denied for user 'db_user'#'localhost' (using password: YES)
In PDOConnection.php line 50:
SQLSTATE[HY000] [1045] Access denied for user 'db_user'#'localhost' (using password: YES)
In PDOConnection.php line 46:
SQLSTATE[HY000] [1045] Access denied for user 'db_user'#'localhost' (using password: YES)
I did look for answers online but they all seem to suggest I need to set up my .env file - which I did according to the tutorial in the first step. The webserver runs well, too. I just don't see where I go wrong exactly. Anyone else struggled with this part or may have an idea? Like I said, I'm pretty new to this.
As a test I've tried to create a new db using the command php bin/console doctrine:database:create - same error messages.

Answer 1

Okay, it did work out well once I've realised I need to type in my credentials twice.
This is my .env file (without the comments at top):
DATABASE_URL="mysql://root:root#127.0.0.1:3306/travolta"
###> symfony/framework-bundle ###
APP_ENV=dev
APP_SECRET=9c47bf77dd9e746ab12e8fb021e226e1
#TRUSTED_PROXIES=127.0.0.1,127.0.0.2
#TRUSTED_HOSTS=localhost,example.com
###< symfony/framework-bundle ###
###> doctrine/doctrine-bundle ###
# Format described at http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url
# For an SQLite database, use: "sqlite:///%kernel.project_dir%/var/data.db"
# Configure your db driver and server_version in config/packages/doctrine.yaml
DATABASE_URL="mysql://root:root#127.0.0.1:3306/travolta"
###< doctrine/doctrine-bundle ###
I did not notice the 2nd last line. I'm so sorry for that! Nevertheless, thanks a lot for helping me out and providing great tipps. It helped me to understand things better.

Answer 2

The database user name or password is incorrect. You can edit this data in the .env file.

Answer 3

Add this line into your .env file:
DATABASE_URL=mysql://{username}:{password}#127.0.0.1:3306/{database_name}
where:
{username} : the username you use to login into phpMyAdmin
{password} : the password you use to login into phpMyAdmin
{database_name} : the database name you would like to use with your Symfony application
Update
According to your comment, if you have not created your database yet, and you feel comfortable with phpMyAdmin, create one:
Then, give the user, sufficient privileges: